20680218

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 50198400

約数和(自身を除く): 29518182

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 89, 117, 178, 234, 267, 331, 351, 534, 662, 702, 801, 993, 1157, 1602, 1986, 2314, 2403, 2979, 3471, 4303, 4806, 5958, 6942, 8606, 8937, 10413, 12909, 17874, 20826, 25818, 29459, 31239, 38727, 58918, 62478, 77454, 88377, 116181, 176754, 232362, 265131, 382967, 530262, 765934, 795393, 1148901, 1590786, 2297802, 3446703, 6893406, 10340109, 20680218]

約数ペア:

[(1, 20680218), (2, 10340109), (3, 6893406), (6, 3446703), (9, 2297802), (13, 1590786), (18, 1148901), (26, 795393), (27, 765934), (39, 530262), (54, 382967), (78, 265131), (89, 232362), (117, 176754), (178, 116181), (234, 88377), (267, 77454), (331, 62478), (351, 58918), (534, 38727), (662, 31239), (702, 29459), (801, 25818), (993, 20826), (1157, 17874), (1602, 12909), (1986, 10413), (2314, 8937), (2403, 8606), (2979, 6942), (3471, 5958), (4303, 4806)]